Photometric Measurements Don't Have To Be Testing

Robert Yeo of Pro-Lite Technology and Dr Gareth John, Laboratory Manager, Photometric & Optical Testing Services will be presenting a free tutorial at Photonex 2011.
 

This tutorial will review the theory of photometry, colorimetry, spectroradiometry and goniophotometry as applied to LEDs and Solid State Lighting. LEDs are being used in increasing numbers in lighting and display applications, ranging from solid state lighting luminaires, display backlights, large area video displays and signage. The human eye is very sensitive to brightness and colour differences and the problem with LEDs is they cannot be manufactured with consistent optical properties, even within the same batch. This makes measuring LED output an important activity, but their small size, narrow spectral emissions, directionality and temperature dependence mean that traditional photometric and colorimetric measurement methods are not always the most appropriate.

Robert Yeo of Pro-Lite will also review the latest advances in photometric and goniophotometric test equipment.
 

For lighting suppliers as well as lighting designers, so-called 'photometric data' is an essential requirement. Dr Gareth John of Photometric & Optical Testing Services will describe the work of their test laboratory in measuring LED lighting and luminaires and in generating standard photometric data in the industry-standard IES and EULUMDAT formats.

• When: Tuesday 18th October
• Time: 11.30 - 12.25
• Where: Area 1, Jaguar Exhibition Hall, Ricoh Arena
• No registration required
• FREE to all visitors